Manual cache invalidation

article.rb

class Article < ActiveRecord::Base
  def publish
    self.published_at = Time.current
    saved = save
    Rails.cache.clear("published_articles")

    saved
  end
end

articles_controller.rb

class ArticlesController < ApplicationController
  def index
    @articles = Rails.cache.fetch("published_articles") do
      Article.published.all
    end
  end
end

Yay Ruby!!

Yay Ruby!!